Greg Zanis' Dream Car is a solar-powered pyramid on four wheels that he built at home with the help of his two sons. Deceptively fragile, this little one-seater weighs in at 8,000 pounds, but its 80 batteries powering four electric engines really make it shift. Find out how fast, and watch the video of it pootling… »2/19/08 1:20pm 2/19/08 1:20pm